/*
 *  Copyright (C) 2010 Tieto Corporation.
 *  Copyright (C) 2011 Igalia S.L.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#if PLATFORM(QT)
#include <QGLContext>
#else
#include <GL/gl.h>
#endif

#if defined(GL_ES_VERSION_2_0)
// Some openGL ES systems miss this typedef.
typedef char GLchar;
#endif

typedef struct _OpenGLFunctionTable OpenGLFunctionTable;

namespace WebCore {
bool initializeOpenGLShims();
OpenGLFunctionTable* openGLFunctionTable();
}

typedef void (*glActiveTextureType) (GLenum);
typedef void (*glAttachShaderType) (GLuint, GLuint);
typedef void (*glBindAttribLocationType) (GLuint, GLuint, const char*);
typedef void (*glBindBufferType) (GLenum, GLuint);
typedef void (*glBindFramebufferType) (GLenum, GLuint);
typedef void (*glBindRenderbufferType) (GLenum, GLuint);
typedef void (*glBlendColorType) (GLclampf, GLclampf, GLclampf, GLclampf);
typedef void (*glBlendEquationType) (GLenum);
typedef void (*glBlendEquationSeparateType)(GLenum, GLenum);
typedef void (*glBlendFuncSeparateType)(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
typedef void (*glBlitFramebufferType) (GLint, GLint, GLint, GLint, GLint, GLint, GLint, GLint, GLbitfield, GLenum);
typedef void (*glBufferDataType) (GLenum, GLsizeiptr, const GLvoid*, GLenum);
typedef void (*glBufferSubDataType) (GLenum, GLintptr, GLsizeiptr, const GLvoid*);
typedef GLenum (*glCheckFramebufferStatusType) (GLenum);
typedef void (*glCompileShaderType) (GLuint);
typedef GLuint (*glCreateProgramType) ();
typedef GLuint (*glCreateShaderType) (GLenum);
typedef void (*glDeleteBuffersType) (GLsizei, const GLuint*);
typedef void (*glDeleteFramebuffersType) (GLsizei n, const GLuint*);
typedef void (*glDeleteProgramType) (GLuint);
typedef void (*glDeleteRenderbuffersType) (GLsizei n, const GLuint*);
typedef void (*glDeleteShaderType) (GLuint);
typedef void (*glDetachShaderType) (GLuint, GLuint);
typedef void (*glDisableVertexAttribArrayType) (GLuint);
typedef void (*glEnableVertexAttribArrayType) (GLuint);
typedef void (*glFramebufferRenderbufferType) (GLenum, GLenum, GLenum, GLuint);
typedef void (*glFramebufferTexture2DType) (GLenum, GLenum, GLenum, GLuint, GLint);
typedef void (*glGenBuffersType) (GLsizei, GLuint*);
typedef void (*glGenerateMipmapType) (GLenum target);
typedef void (*glGenFramebuffersType) (GLsizei, GLuint*);
typedef void (*glGenRenderbuffersType) (GLsizei, GLuint*);
typedef void (*glGetActiveAttribType) (GLuint, GLuint, GLsizei, GLsizei*, GLint*, GLenum*, GLchar*);
typedef void (*glGetActiveUniformType) (GLuint, GLuint, GLsizei, GLsizei*, GLint*, GLenum*, GLchar*);
typedef void (*glGetAttachedShadersType) (GLuint, GLsizei, GLsizei*, GLuint*);
typedef GLint (*glGetAttribLocationType) (GLuint, const char*);
typedef void (*glGetBufferParameterivType) (GLenum, GLenum, GLint*);
typedef void (*glGetFramebufferAttachmentParameterivType) (GLenum, GLenum, GLenum, GLint* params);
typedef void (*glGetProgramInfoLogType) (GLuint, GLsizei, GLsizei*, char*);
typedef void (*glGetProgramivType) (GLuint, GLenum, GLint*);
typedef void (*glGetRenderbufferParameterivType) (GLenum, GLenum, GLint*);
typedef void (*glGetShaderInfoLogType) (GLuint, GLsizei, GLsizei*, char*);
typedef void (*glGetShaderivType) (GLuint, GLenum, GLint*);
typedef void (*glGetShaderSourceType) (GLuint, GLsizei, GLsizei*, char*);
typedef GLint (*glGetUniformLocationType) (GLuint, const char*);
typedef void (*glGetUniformfvType) (GLuint, GLint, GLfloat*);
typedef void (*glGetUniformivType) (GLuint, GLint, GLint*);
typedef void (*glGetVertexAttribfvType) (GLuint, GLenum, GLfloat*);
typedef void (*glGetVertexAttribivType) (GLuint, GLenum, GLint*);
typedef void (*glGetVertexAttribPointervType) (GLuint, GLenum, GLvoid**);
typedef GLboolean (*glIsBufferType) (GLuint);
typedef GLboolean (*glIsFramebufferType) (GLuint);
typedef GLboolean (*glIsProgramType) (GLuint);
typedef GLboolean (*glIsRenderbufferType) (GLuint);
typedef GLboolean (*glIsShaderType) (GLuint);
typedef void (*glLinkProgramType) (GLuint);
typedef void (*glRenderbufferStorageType) (GLenum, GLenum, GLsizei, GLsizei);
typedef void (*glRenderbufferStorageMultisampleType) (GLenum, GLsizei, GLenum, GLsizei, GLsizei);
typedef void (*glSampleCoverageType) (GLclampf, GLboolean);
typedef void (*glShaderSourceType) (GLuint, GLsizei, const char**, const GLint*);
typedef void (*glStencilFuncSeparateType) (GLenum, GLenum, GLint, GLuint);
typedef void (*glStencilMaskSeparateType) (GLenum, GLuint);
typedef void (*glStencilOpSeparateType) (GLenum, GLenum, GLenum, GLenum);
typedef void (*glUniform1fType) (GLint, GLfloat);
typedef void (*glUniform1fvType) (GLint, GLsizei, const GLfloat*);
typedef void (*glUniform1iType) (GLint, GLint);
typedef void (*glUniform1ivType) (GLint, GLsizei, const GLint*);
typedef void (*glUniform2fType) (GLint, GLfloat, GLfloat);
typedef void (*glUniform2fvType) (GLint, GLsizei, const GLfloat*);
typedef void (*glUniform2iType) (GLint, GLint, GLint);
typedef void (*glUniform2ivType) (GLint, GLsizei, const GLint*);
typedef void (*glUniform3fType) (GLint, GLfloat, GLfloat, GLfloat);
typedef void (*glUniform3fvType) (GLint, GLsizei, const GLfloat*);
typedef void (*glUniform3iType) (GLint, GLint, GLint, GLint);
typedef void (*glUniform3ivType) (GLint, GLsizei, const GLint*);
typedef void (*glUniform4fType) (GLint, GLfloat, GLfloat, GLfloat, GLfloat);
typedef void (*glUniform4fvType) (GLint, GLsizei, const GLfloat*);
typedef void (*glUniform4iType) (GLint, GLint, GLint, GLint, GLint);
typedef void (*glUniform4ivType) (GLint, GLsizei, const GLint*);
typedef void (*glUniformMatrix2fvType) (GLint, GLsizei, GLboolean, const GLfloat*);
typedef void (*glUniformMatrix3fvType) (GLint, GLsizei, GLboolean, const GLfloat*);
typedef void (*glUniformMatrix4fvType) (GLint, GLsizei, GLboolean, const GLfloat*);
typedef void (*glUseProgramType) (GLuint);
typedef void (*glValidateProgramType) (GLuint);
typedef void (*glVertexAttrib1fType) (GLuint, const GLfloat);
typedef void (*glVertexAttrib1fvType) (GLuint, const GLfloat*);
typedef void (*glVertexAttrib2fType) (GLuint, const GLfloat, const GLfloat);
typedef void (*glVertexAttrib2fvType) (GLuint, const GLfloat*);
typedef void (*glVertexAttrib3fType) (GLuint, const GLfloat, const GLfloat, const GLfloat);
typedef void (*glVertexAttrib3fvType) (GLuint, const GLfloat*);
typedef void (*glVertexAttrib4fType) (GLuint, const GLfloat, const GLfloat, const GLfloat, const GLfloat);
typedef void (*glVertexAttrib4fvType) (GLuint, const GLfloat*);
typedef void (*glVertexAttribPointerType) (GLuint, GLint, GLenum, GLboolean, GLsizei, const GLvoid*);

#define FUNCTION_TABLE_ENTRY(FunctionName) FunctionName##Type FunctionName

typedef struct _OpenGLFunctionTable {
    FUNCTION_TABLE_ENTRY(glActiveTexture);
    FUNCTION_TABLE_ENTRY(glAttachShader);
    FUNCTION_TABLE_ENTRY(glBindAttribLocation);
    FUNCTION_TABLE_ENTRY(glBindBuffer);
    FUNCTION_TABLE_ENTRY(glBindFramebuffer);
    FUNCTION_TABLE_ENTRY(glBindRenderbuffer);
    FUNCTION_TABLE_ENTRY(glBlendColor);
    FUNCTION_TABLE_ENTRY(glBlendEquation);
    FUNCTION_TABLE_ENTRY(glBlendEquationSeparate);
    FUNCTION_TABLE_ENTRY(glBlendFuncSeparate);
    FUNCTION_TABLE_ENTRY(glBlitFramebuffer);
    FUNCTION_TABLE_ENTRY(glBufferData);
    FUNCTION_TABLE_ENTRY(glBufferSubData);
    FUNCTION_TABLE_ENTRY(glCheckFramebufferStatus);
    FUNCTION_TABLE_ENTRY(glCompileShader);
    FUNCTION_TABLE_ENTRY(glCreateProgram);
    FUNCTION_TABLE_ENTRY(glCreateShader);
    FUNCTION_TABLE_ENTRY(glDeleteBuffers);
    FUNCTION_TABLE_ENTRY(glDeleteFramebuffers);
    FUNCTION_TABLE_ENTRY(glDeleteProgram);
    FUNCTION_TABLE_ENTRY(glDeleteRenderbuffers);
    FUNCTION_TABLE_ENTRY(glDeleteShader);
    FUNCTION_TABLE_ENTRY(glDetachShader);
    FUNCTION_TABLE_ENTRY(glDisableVertexAttribArray);
    FUNCTION_TABLE_ENTRY(glEnableVertexAttribArray);
    FUNCTION_TABLE_ENTRY(glFramebufferRenderbuffer);
    FUNCTION_TABLE_ENTRY(glFramebufferTexture2D);
    FUNCTION_TABLE_ENTRY(glGenBuffers);
    FUNCTION_TABLE_ENTRY(glGenerateMipmap);
    FUNCTION_TABLE_ENTRY(glGenFramebuffers);
    FUNCTION_TABLE_ENTRY(glGenRenderbuffers);
    FUNCTION_TABLE_ENTRY(glGetActiveAttrib);
    FUNCTION_TABLE_ENTRY(glGetActiveUniform);
    FUNCTION_TABLE_ENTRY(glGetAttachedShaders);
    FUNCTION_TABLE_ENTRY(glGetAttribLocation);
    FUNCTION_TABLE_ENTRY(glGetBufferParameteriv);
    FUNCTION_TABLE_ENTRY(glGetFramebufferAttachmentParameteriv);
    FUNCTION_TABLE_ENTRY(glGetProgramInfoLog);
    FUNCTION_TABLE_ENTRY(glGetProgramiv);
    FUNCTION_TABLE_ENTRY(glGetRenderbufferParameteriv);
    FUNCTION_TABLE_ENTRY(glGetShaderInfoLog);
    FUNCTION_TABLE_ENTRY(glGetShaderiv);
    FUNCTION_TABLE_ENTRY(glGetShaderSource);
    FUNCTION_TABLE_ENTRY(glGetUniformfv);
    FUNCTION_TABLE_ENTRY(glGetUniformiv);
    FUNCTION_TABLE_ENTRY(glGetUniformLocation);
    FUNCTION_TABLE_ENTRY(glGetVertexAttribfv);
    FUNCTION_TABLE_ENTRY(glGetVertexAttribiv);
    FUNCTION_TABLE_ENTRY(glGetVertexAttribPointerv);
    FUNCTION_TABLE_ENTRY(glIsBuffer);
    FUNCTION_TABLE_ENTRY(glIsFramebuffer);
    FUNCTION_TABLE_ENTRY(glIsProgram);
    FUNCTION_TABLE_ENTRY(glIsRenderbuffer);
    FUNCTION_TABLE_ENTRY(glIsShader);
    FUNCTION_TABLE_ENTRY(glLinkProgram);
    FUNCTION_TABLE_ENTRY(glRenderbufferStorage);
    FUNCTION_TABLE_ENTRY(glRenderbufferStorageMultisample);
    FUNCTION_TABLE_ENTRY(glSampleCoverage);
    FUNCTION_TABLE_ENTRY(glShaderSource);
    FUNCTION_TABLE_ENTRY(glStencilFuncSeparate);
    FUNCTION_TABLE_ENTRY(glStencilMaskSeparate);
    FUNCTION_TABLE_ENTRY(glStencilOpSeparate);
    FUNCTION_TABLE_ENTRY(glUniform1f);
    FUNCTION_TABLE_ENTRY(glUniform1fv);
    FUNCTION_TABLE_ENTRY(glUniform1i);
    FUNCTION_TABLE_ENTRY(glUniform1iv);
    FUNCTION_TABLE_ENTRY(glUniform2f);
    FUNCTION_TABLE_ENTRY(glUniform2fv);
    FUNCTION_TABLE_ENTRY(glUniform2i);
    FUNCTION_TABLE_ENTRY(glUniform2iv);
    FUNCTION_TABLE_ENTRY(glUniform3f);
    FUNCTION_TABLE_ENTRY(glUniform3fv);
    FUNCTION_TABLE_ENTRY(glUniform3i);
    FUNCTION_TABLE_ENTRY(glUniform3iv);
    FUNCTION_TABLE_ENTRY(glUniform4f);
    FUNCTION_TABLE_ENTRY(glUniform4fv);
    FUNCTION_TABLE_ENTRY(glUniform4i);
    FUNCTION_TABLE_ENTRY(glUniform4iv);
    FUNCTION_TABLE_ENTRY(glUniformMatrix2fv);
    FUNCTION_TABLE_ENTRY(glUniformMatrix3fv);
    FUNCTION_TABLE_ENTRY(glUniformMatrix4fv);
    FUNCTION_TABLE_ENTRY(glUseProgram);
    FUNCTION_TABLE_ENTRY(glValidateProgram);
    FUNCTION_TABLE_ENTRY(glVertexAttrib1f);
    FUNCTION_TABLE_ENTRY(glVertexAttrib1fv);
    FUNCTION_TABLE_ENTRY(glVertexAttrib2f);
    FUNCTION_TABLE_ENTRY(glVertexAttrib2fv);
    FUNCTION_TABLE_ENTRY(glVertexAttrib3f);
    FUNCTION_TABLE_ENTRY(glVertexAttrib3fv);
    FUNCTION_TABLE_ENTRY(glVertexAttrib4f);
    FUNCTION_TABLE_ENTRY(glVertexAttrib4fv);
    FUNCTION_TABLE_ENTRY(glVertexAttribPointer);
} OpenGLFunctionTable;

// We disable the shims for OpenGLShims.cpp, so that we can set them.
#ifndef DISABLE_SHIMS
#define LOOKUP_GL_FUNCTION(Function) WebCore::openGLFunctionTable()->Function
#define glActiveTexture                        LOOKUP_GL_FUNCTION(glActiveTexture)
#define glAttachShader                         LOOKUP_GL_FUNCTION(glAttachShader)
#define glBindAttribLocation                   LOOKUP_GL_FUNCTION(glBindAttribLocation)
#define glBindBuffer                           LOOKUP_GL_FUNCTION(glBindBuffer)
#define glBindFramebufferEXT                   glBindFramebuffer
#define glBindFramebuffer                      LOOKUP_GL_FUNCTION(glBindFramebuffer)
#define glBindRenderbufferEXT                  glBindRenderbuffer
#define glBindRenderbuffer                     LOOKUP_GL_FUNCTION(glBindRenderbuffer)
#define glBlendColor                           LOOKUP_GL_FUNCTION(glBlendColor)
#define glBlendEquation                        LOOKUP_GL_FUNCTION(glBlendEquation)
#define glBlendEquationSeparate                LOOKUP_GL_FUNCTION(glBlendEquationSeparate)
#define glBlendFuncSeparate                    LOOKUP_GL_FUNCTION(glBlendFuncSeparate)
#define glBlitFramebufferEXT                   glBlitFramebuffer
#define glBlitFramebuffer                      LOOKUP_GL_FUNCTION(glBlitFramebuffer)
#define glBufferData                           LOOKUP_GL_FUNCTION(glBufferData)
#define glBufferSubData                        LOOKUP_GL_FUNCTION(glBufferSubData)
#define glCheckFramebufferStatusEXT            glCheckFramebufferStatus
#define glCheckFramebufferStatus               LOOKUP_GL_FUNCTION(glCheckFramebufferStatus)
#define glCompileShader                        LOOKUP_GL_FUNCTION(glCompileShader)
#define glCreateProgram                        LOOKUP_GL_FUNCTION(glCreateProgram)
#define glCreateShader                         LOOKUP_GL_FUNCTION(glCreateShader)
#define glDeleteBuffers                        LOOKUP_GL_FUNCTION(glDeleteBuffers)
#define glDeleteFramebuffersEXT                glDeleteFramebuffers
#define glDeleteFramebuffers                   LOOKUP_GL_FUNCTION(glDeleteFramebuffers)
#define glDeleteProgram                        LOOKUP_GL_FUNCTION(glDeleteProgram)
#define glDeleteRenderbuffersEXT               glDeleteRenderbuffers
#define glDeleteRenderbuffers                  LOOKUP_GL_FUNCTION(glDeleteRenderbuffers)
#define glDeleteShader                         LOOKUP_GL_FUNCTION(glDeleteShader)
#define glDetachShader                         LOOKUP_GL_FUNCTION(glDetachShader)
#define glDisableVertexAttribArray             LOOKUP_GL_FUNCTION(glDisableVertexAttribArray)
#define glEnableVertexAttribArray              LOOKUP_GL_FUNCTION(glEnableVertexAttribArray)
#define glFramebufferRenderbufferEXT           glFramebufferRenderbuffer
#define glFramebufferRenderbuffer              LOOKUP_GL_FUNCTION(glFramebufferRenderbuffer)
#define glFramebufferTexture2DEXT              glFramebufferTexture2D
#define glFramebufferTexture2D                 LOOKUP_GL_FUNCTION(glFramebufferTexture2D)
#define glGenBuffers                           LOOKUP_GL_FUNCTION(glGenBuffers)
#define glGenerateMipmapEXT                    glGenerateMipmap
#define glGenerateMipmap                       LOOKUP_GL_FUNCTION(glGenerateMipmap)
#define glGenFramebuffersEXT                   glGenFramebuffers
#define glGenFramebuffers                      LOOKUP_GL_FUNCTION(glGenFramebuffers)
#define glGenRenderbuffersEXT                  glGenRenderbuffers
#define glGenRenderbuffers                     LOOKUP_GL_FUNCTION(glGenRenderbuffers)
#define glGetActiveAttrib                      LOOKUP_GL_FUNCTION(glGetActiveAttrib)
#define glGetActiveUniform                     LOOKUP_GL_FUNCTION(glGetActiveUniform)
#define glGetAttachedShaders                   LOOKUP_GL_FUNCTION(glGetAttachedShaders)
#define glGetAttribLocation                    LOOKUP_GL_FUNCTION(glGetAttribLocation)
#define glGetBufferParameterivEXT              glGetBufferParameteriv
#define glGetBufferParameteriv                 LOOKUP_GL_FUNCTION(glGetBufferParameteriv)
#define glGetFramebufferAttachmentParameterivEXT glGetFramebufferAttachmentParameteriv
#define glGetFramebufferAttachmentParameteriv  LOOKUP_GL_FUNCTION(glGetFramebufferAttachmentParameteriv)
#define glGetProgramInfoLog                    LOOKUP_GL_FUNCTION(glGetProgramInfoLog)
#define glGetProgramiv                         LOOKUP_GL_FUNCTION(glGetProgramiv)
#define glGetRenderbufferParameterivEXT        glGetRenderbufferParameteriv
#define glGetRenderbufferParameteriv           LOOKUP_GL_FUNCTION(glGetRenderbufferParameteriv)
#define glGetShaderInfoLog                     LOOKUP_GL_FUNCTION(glGetShaderInfoLog)
#define glGetShaderiv                          LOOKUP_GL_FUNCTION(glGetShaderiv)
#define glGetShaderSource                      LOOKUP_GL_FUNCTION(glGetShaderSource)
#define glGetUniformfv                         LOOKUP_GL_FUNCTION(glGetUniformfv)
#define glGetUniformiv                         LOOKUP_GL_FUNCTION(glGetUniformiv)
#define glGetUniformLocation                   LOOKUP_GL_FUNCTION(glGetUniformLocation)
#define glGetVertexAttribfv                    LOOKUP_GL_FUNCTION(glGetVertexAttribfv)
#define glGetVertexAttribiv                    LOOKUP_GL_FUNCTION(glGetVertexAttribiv)
#define glGetVertexAttribPointerv              LOOKUP_GL_FUNCTION(glGetVertexAttribPointerv)
#define glIsBuffer                             LOOKUP_GL_FUNCTION(glIsBuffer)
#define glIsFramebufferEXT                     glIsFramebuffer
#define glIsFramebuffer                        LOOKUP_GL_FUNCTION(glIsFramebuffer)
#define glIsProgram                            LOOKUP_GL_FUNCTION(glIsProgram)
#define glIsRenderbufferEXT                    glIsRenderbuffer
#define glIsRenderbuffer                       LOOKUP_GL_FUNCTION(glIsRenderbuffer)
#define glIsShader                             LOOKUP_GL_FUNCTION(glIsShader)
#define glLinkProgram                          LOOKUP_GL_FUNCTION(glLinkProgram)
#define glRenderbufferStorageEXT               glRenderbufferStorage
#define glRenderbufferStorage                  LOOKUP_GL_FUNCTION(glRenderbufferStorage)
#define glRenderbufferStorageMultisampleEXT    glRenderbufferStorageMultisample
#define glRenderbufferStorageMultisample       LOOKUP_GL_FUNCTION(glRenderbufferStorageMultisample)
#define glSampleCoverage                       LOOKUP_GL_FUNCTION(glSampleCoverage)
#define glShaderSource                         LOOKUP_GL_FUNCTION(glShaderSource)
#define glStencilFuncSeparate                  LOOKUP_GL_FUNCTION(glStencilFuncSeparate)
#define glStencilMaskSeparate                  LOOKUP_GL_FUNCTION(glStencilMaskSeparate)
#define glStencilOpSeparate                    LOOKUP_GL_FUNCTION(glStencilOpSeparate)
#define glUniform1f                            LOOKUP_GL_FUNCTION(glUniform1f)
#define glUniform1fv                           LOOKUP_GL_FUNCTION(glUniform1fv)
#define glUniform1i                            LOOKUP_GL_FUNCTION(glUniform1i)
#define glUniform1iv                           LOOKUP_GL_FUNCTION(glUniform1iv)
#define glUniform2f                            LOOKUP_GL_FUNCTION(glUniform2f)
#define glUniform2fv                           LOOKUP_GL_FUNCTION(glUniform2fv)
#define glUniform2i                            LOOKUP_GL_FUNCTION(glUniform2i)
#define glUniform2iv                           LOOKUP_GL_FUNCTION(glUniform2iv)
#define glUniform3f                            LOOKUP_GL_FUNCTION(glUniform3f)
#define glUniform3fv                           LOOKUP_GL_FUNCTION(glUniform3fv)
#define glUniform3i                            LOOKUP_GL_FUNCTION(glUniform3i)
#define glUniform3iv                           LOOKUP_GL_FUNCTION(glUniform3iv)
#define glUniform4f                            LOOKUP_GL_FUNCTION(glUniform4f)
#define glUniform4fv                           LOOKUP_GL_FUNCTION(glUniform4fv)
#define glUniform4i                            LOOKUP_GL_FUNCTION(glUniform4i)
#define glUniform4iv                           LOOKUP_GL_FUNCTION(glUniform4iv)
#define glUniformMatrix2fv                     LOOKUP_GL_FUNCTION(glUniformMatrix2fv)
#define glUniformMatrix3fv                     LOOKUP_GL_FUNCTION(glUniformMatrix3fv)
#define glUniformMatrix4fv                     LOOKUP_GL_FUNCTION(glUniformMatrix4fv)
#define glUseProgram                           LOOKUP_GL_FUNCTION(glUseProgram)
#define glValidateProgram                      LOOKUP_GL_FUNCTION(glValidateProgram)
#define glVertexAttrib1f                       LOOKUP_GL_FUNCTION(glVertexAttrib1f)
#define glVertexAttrib1fv                      LOOKUP_GL_FUNCTION(glVertexAttrib1fv)
#define glVertexAttrib2f                       LOOKUP_GL_FUNCTION(glVertexAttrib2f)
#define glVertexAttrib2fv                      LOOKUP_GL_FUNCTION(glVertexAttrib2fv)
#define glVertexAttrib3f                       LOOKUP_GL_FUNCTION(glVertexAttrib3f)
#define glVertexAttrib3fv                      LOOKUP_GL_FUNCTION(glVertexAttrib3fv)
#define glVertexAttrib4f                       LOOKUP_GL_FUNCTION(glVertexAttrib4f)
#define glVertexAttrib4fv                      LOOKUP_GL_FUNCTION(glVertexAttrib4fv)
#define glVertexAttribPointer                  LOOKUP_GL_FUNCTION(glVertexAttribPointer)
#endif
